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Lasse Skibsbye, Thomas Jespersen, Torsten Christ, Mary M Maleckar, Jonas van den Brink, Pasi Tavi, Jussi T Koivumäki
BACKGROUND: Refractoriness of cardiac cells limits maximum frequency of electrical activity and protects the heart from tonic contractions. Short refractory periods support major arrhythmogenic substrates and augmentation of refractoriness is therefore seen as a main mechanism of antiarrhythmic drugs. Cardiomyocyte excitability depends on availability of sodium channels, which involves both time- and voltage-dependent recovery from inactivation. This study therefore aims to characterise how sodium channel inactivation affects refractoriness in human atria...
October 20, 2016: Journal of Molecular and Cellular Cardiology
John Jose, Geetesh Manik, Mohamed Abdel-Wahab
Transcatheter aortic valve implantation (TAVI) has revolutionized the management of elderly patients with symptomatic severe aortic stenosis in the western world. It is a valuable alternative to surgical aortic valve replacement in patients, who are inoperable or at high surgical risk due to co-morbidities. The prevalence of aortic stenosis increases sharply with age after the sixth decade and is expected to have a significant impact on the geriatric health care system of India, given the rapid increase in life expectancy in recent years...
September 2016: Indian Heart Journal
Stefan Büttner, Helge Weiler, Carolin Zöller, Benjamin Koch, Andreas Zierer, Andreas M Zeiher, Helmut Geiger, Mariuca Vasa-Nicotera, Ingeborg A Hauser, Stephan Fichtlscherer
Management of dialysis patients with valvular heart disease waitlisted for kidney transplantation is challenging. Development of severe aortic valve stenosis can lead to the exclusion from the transplant program or even death while on the waiting list. In dialysis patients, surgical aortic valve replacement is associated with a high perioperative risk with increased morbidity and mortality. In contrast, transcatheter aortic valve implantation emerges as a viable option for dialysis patients. Herein, we present the long-term follow-up of successful kidney transplantation after TAVI in a diabetic patient receiving long-term hemodialysis...
November 2016: Annals of Thoracic Surgery
Daniel Unic, Zeljko Sutlic, Boris Starcevic, Nikola Bradic, Davor Baric, Igor Rudez
Annular rupture presents a rare but potentially fatal complication of transcatheter aortic valve implantation (TAVI). Although it can be subtle and subclinical in presentation, most severe forms present with hemodynamic instability and represent true emergencies requiring a more invasive treatment, even conventional surgery. We present a case of successful treatment of annular rupture by left ventricular outflow tract patch and surgical aortic valve replacement.
October 19, 2016: Wiener Klinische Wochenschrift
Gennaro Giustino, Robert M A Van der Boon, Javier Molina-Martin de Nicolas, Nicolas Dumonteil, Alaide Chieffo, Peter P T de Jaegere, Didier Tchetche, Bertrand Marcheix, Damien Millischer, Romain Cassagneau, Didier Carrié, Nicolas M Van Mieghem, Antonio Colombo
AIMS: We sought to evaluate the impact of permanent pacemaker (PPM) implantation on two-year mortality and one-year left ventricular ejection fraction recovery (∆LVEFR=one-year LVEF-baseline LVEF) after transcatheter aortic valve implantation (TAVI). METHODS AND RESULTS: We pooled patient-level data from four European institutions with significant TAVI volume. Outcomes were compared between patients without PPM (no-PPM), patients with PPM prior to TAVI (old-PPM) and patients with PPM implanted after TAVI (new-PPM)...
October 20, 2016: EuroIntervention
A B Gopalamurugan, K Murali, B Jyotsana, A Jacob, V V Bashi
Transcatheter Aortic Valve Implantation (TAVI) is a well-described treatment for symptomatic calcific severe aortic stenosis. However, TAVI technology is being increasingly used around the world to treat selected cases of severe aortic regurgitation (AR). One of the main limitations of using TAVI technology for AR is the lack of calcification, which is common in such cases. This makes anchoring of a TAVI prosthesis to the aortic annulus difficult and risks displacement or embolization. However, with the availability of recapturable and repositionable TAVI technologies, these limitations have been overcome to a large extent...
September 2016: Indian Heart Journal
Anna Olasińska-Wiśniewska, Marek Grygier, Maciej Lesiak, Olga Trojnarska, Aleksander Araszkiewicz, Anna Komosa, Marcin Misterski, Marek Jemielity, Marek Proch, Stefan Grajek
BACKGROUND: In patients treated with transcatheter aortic valve implantation (TAVI), age is recognized as one of the most important risk factors. The aim of our study was to evaluate whether early and mid-term results of TAVI were worse in patients over 85 year old compared with the younger population. METHODS: From September 2010 to November 2015, 162 consecutive patients (mean age 78.4 ±7.1 years, 47.5 % females) underwent TAVI in our Institution. Patients were divided into two groups: 1) elderly (≥ 85 year old) and 2) younger patients (< 85 year old)...
October 17, 2016: Cardiology Journal
Giuseppe Tarantini, Marco Mojoli, Marina Urena, Alec Vahanian
Atrial fibrillation (AF) is a common arrhythmia in patients with aortic stenosis. When these patients are treated medically or by surgical aortic valve replacement, AF is associated with increased risk of adverse events including death. Growing evidence suggests a significant impact of AF on outcomes also in patients with aortic valve stenosis undergoing transcatheter aortic valve implantation (TAVI). Conversely, limited evidence is available regarding the optimal management of this condition. This review aims to summarize prevalence, pathophysiology, prognosis, and treatment of AF in patients undergoing TAVI...
October 15, 2016: European Heart Journal
Pawel Kleczynski, Artur Dziewierz, Maciej Bagienski, Lukasz Rzeszutko, Danuta Sorysz, Jaroslaw Trebacz, Robert Sobczynski, Marek Tomala, Andrzej Gackowski, Dariusz Dudek
BACKGROUND: We sought to compare long-term mortality and quality of life (QoL) in very elderly (≥80 years) patients undergoing transcatheter aortic valve implantation (TAVI) in comparison with younger patients (<80 years). METHODS: A total of 101 patients treated with TAVI were divided into two groups according to age: <80 years (n = 42; 41.6%) and ≥80 years (n = 59; 58.4%). The baseline characteristics, including procedural outcomes as well as frailty and QoL assessment were compared between age groups...
October 15, 2016: Journal of Invasive Cardiology
Giuseppe D'Ancona, Hüseyin U Agma, Hüseyin Ince, Gihan El-Achkar, Martin Dißmann, Jasmin Ortak, Stephan Kische
OBJECTIVES: We present our single center experience with the direct flow medical (DFM) prosthesis addressing the impact of native aortic valve (AV) calcification degree on outcomes. BACKGROUND: The DFM® has been introduced for transcatheter aortic valve implantation (TAVI). The valve has a nonmetallic and inflatable support structure. METHODS: Patients were divided in two groups according to preoperative cardiac computed tomography (CT): group I moderate calcification and group II heavy calcification of the total AV area...
October 14, 2016: Catheterization and Cardiovascular Interventions
Lianne M Tomfohr-Madsen, Tavis S Campbell, Gerald F Giesbrecht, Nicole L Letourneau, Linda E Carlson, Joshua W Madsen, Sona Dimidjian
BACKGROUND: Clinically significant psychological distress in pregnancy is common, with epidemiological research suggesting that between 15 and 25 % of pregnant women experience elevated symptoms of stress, anxiety, and depression. Untreated psychological distress in pregnancy is associated with poor obstetrical outcomes, changes in maternal physiology, elevated incidence of child physical and psychological disorders, and is predictive of maternal postpartum mood disorders. Despite the wide-ranging impact of antenatal psychological distress on mothers and their children, there is a gap in our knowledge about the most effective treatments that are available for psychological distress experienced in pregnancy...
October 13, 2016: Trials
V J Nijenhuis, M P Huitema, V M M Vorselaars, M J Swaans, T de Kroon, J A S van der Heyden, B J W M Rensing, R Heijmen, J M Ten Berg, M C Post
AIMS: Pulmonary hypertension (PH) is associated with mortality after transcatheter aortic valve implantation (TAVI). However, diagnosis based on tricuspid regurgitant velocity (TRV) is often inaccurate and unreliable. The updated PH guidelines introduced a PH probability grading implementing additional PH signs on transthoracic echocardiography (TTE), from which we aimed to analyse its effects on clinical outcomes in patients undergoing TAVI. METHODS AND RESULTS: We included 591 consecutive patients (mean age 80...
October 6, 2016: International Journal of Cardiology
Roland Hilling-Smith, James Cockburn, Maureen Dooley, Jessica Parker, Andrea Newton, Andrew Hill, Uday Trivedi, Adam de Belder, David Hildick-Smith
: Transcatheter aortic valve implantation (TAVI) and balloon aortic valvuloplasty (BAV) are now well established percutaneous procedures. These procedures almost always require bursts of rapid ventricular pacing to temporarily reduce cardiac output to facilitate the procedure, usually done via a temporary pacing wire inserted into the right ventricle. We describe a case series of 132 cases of TAVI and 76 BAV done using ventricular pacing via the left ventricular lead by simply connecting one electrode to the patient's skin and one electrode through the left ventricular (LV) wire...
October 11, 2016: Catheterization and Cardiovascular Interventions
César Morís, Isaac Pascual, Pablo Avanzas
No abstract text is available yet for this article.
October 6, 2016: Revista Española de Cardiología
Maija Mutikainen, Tomi Tuomainen, Nikolay Naumenko, Jenni Huusko, Boris Smirin, Svetlana Laidinen, Krista Kokki, Heidi Hynynen, Seppo Ylä-Herttuala, Merja Heinäniemi, Jorge L Ruas, Pasi Tavi
The transcriptional coactivator PGC-1α1 has been identified as a central factor mediating metabolic adaptations of the heart. However, it is still mostly unresolved how much physiological changes in PGC-1α1 expression levels actually contribute to the functional adaptation of the heart. The aim of this study was to characterize the transcriptional and functional effects of physiologically relevant, moderate PGC-1α1 expression in the heart. In vivo and ex vivo physiological analysis shows that expression of PGC-1α1 within a physiological range in mouse heart does not induce the expected metabolic alterations, but instead induces a unique E-C-coupling phenotype recapitulating features typically seen in physiological hypertrophy...
September 26, 2016: Journal of Physiology
Paweł Kleczyński, Maciej Bagieński, Artur Dziewierz, Łukasz Rzeszutko, Danuta Sorysz, Jarosław Trębacz, Robert Sobczyński, Marek Tomala, Maciej Stąpór, Dariusz Dudek
PURPOSE: Restoration of quality of life (QoL) and improvement of clinical outcomes is crucial in elderly patients undergoing transcatheter aortic valve implantation (TAVI). We sought to evaluate changes in QoL and all-cause mortality 12 months after TAVI. METHODS: A total of 101 patients who underwent TAVI were included. Patients were followed for 12 months. QoL was assessed at baseline and at 1, 6 and 12 months after TAVI using EQ-5D-3L with a visual analog scale (VAS)...
October 10, 2016: International Journal of Artificial Organs
Piotr Chodór, Krzysztof Wilczek, Teresa Zielińska, Roman Przybylski, Jan Głowacki, Łukasz Włoch, Marian Zembala, Zbigniew Kalarus
BACKGROUND: Transcatheter aortic valve implantation (TAVI) is presently a recognized treatment modality for patients with severe aortic stenosis ineligible for surgery. It reduces mortality as compared to the conservative treatment. It is further expected from this therapy to improve quality of life by improving of the cardiovascular function performance. The aim of this study is to compare patients' cardiovascular system efficiency in the 6-minute walk test (6MWT) made before and after TAVI and at the 6-12-month follow-up...
October 7, 2016: Cardiology Journal
Leslie S P Eide, Anette H Ranhoff, Bengt Fridlund, Rune Haaverstad, Karl Ove Hufthammer, Karel K J Kuiper, Jan Erik Nordrehaug, Tone M Norekvål
OBJECTIVES: To determine whether postoperative delirium predicts first-time readmissions and mortality in octogenarian patients within 180 days after aortic valve therapy with surgical aortic valve replacement (SAVR) or transcatheter aortic valve implantation (TAVI), and to determine the most common diagnoses at readmission. DESIGN: Prospective cohort study of patients undergoing elective SAVR or TAVI. SETTING: Tertiary university hospital that performs all SAVRs and TAVIs in Western Norway...
October 5, 2016: BMJ Open
Yigal Abramowitz, Hasan Jilaihawi, Tarun Chakravarty, Yoshio Maeno, Hiroyuki Kawamori, Yoshio Kazuno, Geeteshwar Mangat, Tanya Rami, Zev Allison, David Anderson, Larry Chan, Wen Cheng, Raj R Makkar
OBJECTIVES: Aortic valve preparation with balloon aortic valvuloplasty (BAV) has been previously considered mandatory during transcatheter aortic valve implantation (TAVI) procedures. BAV-inherent risks including stroke, conduction abnormalities, and reduced device profile size established the rationale for safe valve deployment without the need for aggressive valve preparation. We investigate the feasibility and safety of performing Sapien 3 (S3; Edwards Lifesciences) balloon-expandable TAVI with moderate or without predilation (PD)...
October 2016: Journal of Invasive Cardiology
Claudia Fiorina, Giuseppe Bruschi, Luca Testa, Marco De Carlo, Federico De Marco, Giuseppe Coletti, Stefano Bonardelli, Marianna Adamo, Salvatore Curello, Giovanni Scioti, Paolo Panisi, Francesco Bedogni, Anna S Petronio, Federica Ettori
BACKGROUND: About one-third of candidates for transcatheter aortic valve implantation (TAVI) suffer from severe peripheral artery disease, making the routine femoral approach difficult or impossible. Aim was to compare the trans-axillary (TAx) and the trans-aortic (TAo) route for TAVI with Medtronic CoreValve Revalving System (CRS). METHODS: 242 (23%) out of 1049 consecutive TAVI with 18F CRS were treated in 4 high-volume Italian Centre through TAx (61%) and TAo (39%)...
October 4, 2016: Journal of Cardiovascular Surgery
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